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<pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
<span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
<span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.<a name="line.5"></a>
<span class="sourceLineNo">006</span> *<a name="line.6"></a>
<span class="sourceLineNo">007</span> * Project Info:  http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
<span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
<span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
<span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
<span class="sourceLineNo">013</span> *<a name="line.13"></a>
<span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
<span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
<span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
<span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
<span class="sourceLineNo">018</span> *<a name="line.18"></a>
<span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
<span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
<span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,<a name="line.21"></a>
<span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
<span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
<span class="sourceLineNo">026</span> *<a name="line.26"></a>
<span class="sourceLineNo">027</span> * ---------------<a name="line.27"></a>
<span class="sourceLineNo">028</span> * XYDataItem.java<a name="line.28"></a>
<span class="sourceLineNo">029</span> * ---------------<a name="line.29"></a>
<span class="sourceLineNo">030</span> * (C) Copyright 2003-2009, by Object Refinery Limited.<a name="line.30"></a>
<span class="sourceLineNo">031</span> *<a name="line.31"></a>
<span class="sourceLineNo">032</span> * Original Author:  David Gilbert (for Object Refinery Limited);<a name="line.32"></a>
<span class="sourceLineNo">033</span> * Contributor(s):   -;<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * Changes<a name="line.35"></a>
<span class="sourceLineNo">036</span> * -------<a name="line.36"></a>
<span class="sourceLineNo">037</span> * 05-Aug-2003 : Renamed XYDataPair --&gt; XYDataItem (DG);<a name="line.37"></a>
<span class="sourceLineNo">038</span> * 03-Feb-2004 : Fixed bug in equals() method (DG);<a name="line.38"></a>
<span class="sourceLineNo">039</span> * 21-Feb-2005 : Added setY(double) method (DG);<a name="line.39"></a>
<span class="sourceLineNo">040</span> * ------------- JFREECHART 1.0.x ---------------------------------------------<a name="line.40"></a>
<span class="sourceLineNo">041</span> * 30-Nov-2007 : Implemented getXValue() and getYValue(), plus toString() for<a name="line.41"></a>
<span class="sourceLineNo">042</span> *               debugging use (DG);<a name="line.42"></a>
<span class="sourceLineNo">043</span> * 10-Jun-2009 : Reimplemented cloning (DG);<a name="line.43"></a>
<span class="sourceLineNo">044</span> *<a name="line.44"></a>
<span class="sourceLineNo">045</span> */<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span>package org.jfree.data.xy;<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>import java.io.Serializable;<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.jfree.util.ObjectUtilities;<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>/**<a name="line.53"></a>
<span class="sourceLineNo">054</span> * Represents one (x, y) data item for an {@link XYSeries}.  Note that<a name="line.54"></a>
<span class="sourceLineNo">055</span> * subclasses are REQUIRED to support cloning.<a name="line.55"></a>
<span class="sourceLineNo">056</span> */<a name="line.56"></a>
<span class="sourceLineNo">057</span>public class XYDataItem implements Cloneable, Comparable, Serializable {<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>    /** For serialization. */<a name="line.59"></a>
<span class="sourceLineNo">060</span>    private static final long serialVersionUID = 2751513470325494890L;<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>    /** The x-value (&lt;code&gt;null&lt;/code&gt; not permitted). */<a name="line.62"></a>
<span class="sourceLineNo">063</span>    private Number x;<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>    /** The y-value. */<a name="line.65"></a>
<span class="sourceLineNo">066</span>    private Number y;<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span>    /**<a name="line.68"></a>
<span class="sourceLineNo">069</span>     * Constructs a new data item.<a name="line.69"></a>
<span class="sourceLineNo">070</span>     *<a name="line.70"></a>
<span class="sourceLineNo">071</span>     * @param x  the x-value (&lt;code&gt;null&lt;/code&gt; NOT permitted).<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * @param y  the y-value (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.72"></a>
<span class="sourceLineNo">073</span>     */<a name="line.73"></a>
<span class="sourceLineNo">074</span>    public XYDataItem(Number x, Number y) {<a name="line.74"></a>
<span class="sourceLineNo">075</span>        if (x == null) {<a name="line.75"></a>
<span class="sourceLineNo">076</span>            throw new IllegalArgumentException("Null 'x' argument.");<a name="line.76"></a>
<span class="sourceLineNo">077</span>        }<a name="line.77"></a>
<span class="sourceLineNo">078</span>        this.x = x;<a name="line.78"></a>
<span class="sourceLineNo">079</span>        this.y = y;<a name="line.79"></a>
<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>    /**<a name="line.82"></a>
<span class="sourceLineNo">083</span>     * Constructs a new data item.<a name="line.83"></a>
<span class="sourceLineNo">084</span>     *<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * @param x  the x-value.<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * @param y  the y-value.<a name="line.86"></a>
<span class="sourceLineNo">087</span>     */<a name="line.87"></a>
<span class="sourceLineNo">088</span>    public XYDataItem(double x, double y) {<a name="line.88"></a>
<span class="sourceLineNo">089</span>        this(new Double(x), new Double(y));<a name="line.89"></a>
<span class="sourceLineNo">090</span>    }<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span>    /**<a name="line.92"></a>
<span class="sourceLineNo">093</span>     * Returns the x-value.<a name="line.93"></a>
<span class="sourceLineNo">094</span>     *<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * @return The x-value (never &lt;code&gt;null&lt;/code&gt;).<a name="line.95"></a>
<span class="sourceLineNo">096</span>     */<a name="line.96"></a>
<span class="sourceLineNo">097</span>    public Number getX() {<a name="line.97"></a>
<span class="sourceLineNo">098</span>        return this.x;<a name="line.98"></a>
<span class="sourceLineNo">099</span>    }<a name="line.99"></a>
<span class="sourceLineNo">100</span><a name="line.100"></a>
<span class="sourceLineNo">101</span>    /**<a name="line.101"></a>
<span class="sourceLineNo">102</span>     * Returns the x-value as a double primitive.<a name="line.102"></a>
<span class="sourceLineNo">103</span>     *<a name="line.103"></a>
<span class="sourceLineNo">104</span>     * @return The x-value.<a name="line.104"></a>
<span class="sourceLineNo">105</span>     *<a name="line.105"></a>
<span class="sourceLineNo">106</span>     * @see #getX()<a name="line.106"></a>
<span class="sourceLineNo">107</span>     * @see #getYValue()<a name="line.107"></a>
<span class="sourceLineNo">108</span>     *<a name="line.108"></a>
<span class="sourceLineNo">109</span>     * @since 1.0.9<a name="line.109"></a>
<span class="sourceLineNo">110</span>     */<a name="line.110"></a>
<span class="sourceLineNo">111</span>    public double getXValue() {<a name="line.111"></a>
<span class="sourceLineNo">112</span>        // this.x is not allowed to be null...<a name="line.112"></a>
<span class="sourceLineNo">113</span>        return this.x.doubleValue();<a name="line.113"></a>
<span class="sourceLineNo">114</span>    }<a name="line.114"></a>
<span class="sourceLineNo">115</span><a name="line.115"></a>
<span class="sourceLineNo">116</span>    /**<a name="line.116"></a>
<span class="sourceLineNo">117</span>     * Returns the y-value.<a name="line.117"></a>
<span class="sourceLineNo">118</span>     *<a name="line.118"></a>
<span class="sourceLineNo">119</span>     * @return The y-value (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.119"></a>
<span class="sourceLineNo">120</span>     */<a name="line.120"></a>
<span class="sourceLineNo">121</span>    public Number getY() {<a name="line.121"></a>
<span class="sourceLineNo">122</span>        return this.y;<a name="line.122"></a>
<span class="sourceLineNo">123</span>    }<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span>    /**<a name="line.125"></a>
<span class="sourceLineNo">126</span>     * Returns the y-value as a double primitive.<a name="line.126"></a>
<span class="sourceLineNo">127</span>     *<a name="line.127"></a>
<span class="sourceLineNo">128</span>     * @return The y-value.<a name="line.128"></a>
<span class="sourceLineNo">129</span>     *<a name="line.129"></a>
<span class="sourceLineNo">130</span>     * @see #getY()<a name="line.130"></a>
<span class="sourceLineNo">131</span>     * @see #getXValue()<a name="line.131"></a>
<span class="sourceLineNo">132</span>     *<a name="line.132"></a>
<span class="sourceLineNo">133</span>     * @since 1.0.9<a name="line.133"></a>
<span class="sourceLineNo">134</span>     */<a name="line.134"></a>
<span class="sourceLineNo">135</span>    public double getYValue() {<a name="line.135"></a>
<span class="sourceLineNo">136</span>        double result = Double.NaN;<a name="line.136"></a>
<span class="sourceLineNo">137</span>        if (this.y != null) {<a name="line.137"></a>
<span class="sourceLineNo">138</span>            result = this.y.doubleValue();<a name="line.138"></a>
<span class="sourceLineNo">139</span>        }<a name="line.139"></a>
<span class="sourceLineNo">140</span>        return result;<a name="line.140"></a>
<span class="sourceLineNo">141</span>    }<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span>    /**<a name="line.143"></a>
<span class="sourceLineNo">144</span>     * Sets the y-value for this data item.  Note that there is no<a name="line.144"></a>
<span class="sourceLineNo">145</span>     * corresponding method to change the x-value.<a name="line.145"></a>
<span class="sourceLineNo">146</span>     *<a name="line.146"></a>
<span class="sourceLineNo">147</span>     * @param y  the new y-value.<a name="line.147"></a>
<span class="sourceLineNo">148</span>     */<a name="line.148"></a>
<span class="sourceLineNo">149</span>    public void setY(double y) {<a name="line.149"></a>
<span class="sourceLineNo">150</span>        setY(new Double(y));<a name="line.150"></a>
<span class="sourceLineNo">151</span>    }<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span>    /**<a name="line.153"></a>
<span class="sourceLineNo">154</span>     * Sets the y-value for this data item.  Note that there is no<a name="line.154"></a>
<span class="sourceLineNo">155</span>     * corresponding method to change the x-value.<a name="line.155"></a>
<span class="sourceLineNo">156</span>     *<a name="line.156"></a>
<span class="sourceLineNo">157</span>     * @param y  the new y-value (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.157"></a>
<span class="sourceLineNo">158</span>     */<a name="line.158"></a>
<span class="sourceLineNo">159</span>    public void setY(Number y) {<a name="line.159"></a>
<span class="sourceLineNo">160</span>        this.y = y;<a name="line.160"></a>
<span class="sourceLineNo">161</span>    }<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span>    /**<a name="line.163"></a>
<span class="sourceLineNo">164</span>     * Returns an integer indicating the order of this object relative to<a name="line.164"></a>
<span class="sourceLineNo">165</span>     * another object.<a name="line.165"></a>
<span class="sourceLineNo">166</span>     * &lt;P&gt;<a name="line.166"></a>
<span class="sourceLineNo">167</span>     * For the order we consider only the x-value:<a name="line.167"></a>
<span class="sourceLineNo">168</span>     * negative == "less-than", zero == "equal", positive == "greater-than".<a name="line.168"></a>
<span class="sourceLineNo">169</span>     *<a name="line.169"></a>
<span class="sourceLineNo">170</span>     * @param o1  the object being compared to.<a name="line.170"></a>
<span class="sourceLineNo">171</span>     *<a name="line.171"></a>
<span class="sourceLineNo">172</span>     * @return An integer indicating the order of this data pair object<a name="line.172"></a>
<span class="sourceLineNo">173</span>     *      relative to another object.<a name="line.173"></a>
<span class="sourceLineNo">174</span>     */<a name="line.174"></a>
<span class="sourceLineNo">175</span>    public int compareTo(Object o1) {<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span>        int result;<a name="line.177"></a>
<span class="sourceLineNo">178</span><a name="line.178"></a>
<span class="sourceLineNo">179</span>        // CASE 1 : Comparing to another TimeSeriesDataPair object<a name="line.179"></a>
<span class="sourceLineNo">180</span>        // -------------------------------------------------------<a name="line.180"></a>
<span class="sourceLineNo">181</span>        if (o1 instanceof XYDataItem) {<a name="line.181"></a>
<span class="sourceLineNo">182</span>            XYDataItem dataItem = (XYDataItem) o1;<a name="line.182"></a>
<span class="sourceLineNo">183</span>            double compare = this.x.doubleValue()<a name="line.183"></a>
<span class="sourceLineNo">184</span>                             - dataItem.getX().doubleValue();<a name="line.184"></a>
<span class="sourceLineNo">185</span>            if (compare &gt; 0.0) {<a name="line.185"></a>
<span class="sourceLineNo">186</span>                result = 1;<a name="line.186"></a>
<span class="sourceLineNo">187</span>            }<a name="line.187"></a>
<span class="sourceLineNo">188</span>            else {<a name="line.188"></a>
<span class="sourceLineNo">189</span>                if (compare &lt; 0.0) {<a name="line.189"></a>
<span class="sourceLineNo">190</span>                    result = -1;<a name="line.190"></a>
<span class="sourceLineNo">191</span>                }<a name="line.191"></a>
<span class="sourceLineNo">192</span>                else {<a name="line.192"></a>
<span class="sourceLineNo">193</span>                    result = 0;<a name="line.193"></a>
<span class="sourceLineNo">194</span>                }<a name="line.194"></a>
<span class="sourceLineNo">195</span>            }<a name="line.195"></a>
<span class="sourceLineNo">196</span>        }<a name="line.196"></a>
<span class="sourceLineNo">197</span><a name="line.197"></a>
<span class="sourceLineNo">198</span>        // CASE 2 : Comparing to a general object<a name="line.198"></a>
<span class="sourceLineNo">199</span>        // ---------------------------------------------<a name="line.199"></a>
<span class="sourceLineNo">200</span>        else {<a name="line.200"></a>
<span class="sourceLineNo">201</span>            // consider time periods to be ordered after general objects<a name="line.201"></a>
<span class="sourceLineNo">202</span>            result = 1;<a name="line.202"></a>
<span class="sourceLineNo">203</span>        }<a name="line.203"></a>
<span class="sourceLineNo">204</span><a name="line.204"></a>
<span class="sourceLineNo">205</span>        return result;<a name="line.205"></a>
<span class="sourceLineNo">206</span><a name="line.206"></a>
<span class="sourceLineNo">207</span>    }<a name="line.207"></a>
<span class="sourceLineNo">208</span><a name="line.208"></a>
<span class="sourceLineNo">209</span>    /**<a name="line.209"></a>
<span class="sourceLineNo">210</span>     * Returns a clone of this object.<a name="line.210"></a>
<span class="sourceLineNo">211</span>     *<a name="line.211"></a>
<span class="sourceLineNo">212</span>     * @return A clone.<a name="line.212"></a>
<span class="sourceLineNo">213</span>     */<a name="line.213"></a>
<span class="sourceLineNo">214</span>    public Object clone() {<a name="line.214"></a>
<span class="sourceLineNo">215</span>        Object clone = null;<a name="line.215"></a>
<span class="sourceLineNo">216</span>        try {<a name="line.216"></a>
<span class="sourceLineNo">217</span>            clone = super.clone();<a name="line.217"></a>
<span class="sourceLineNo">218</span>        }<a name="line.218"></a>
<span class="sourceLineNo">219</span>        catch (CloneNotSupportedException e) { // won't get here...<a name="line.219"></a>
<span class="sourceLineNo">220</span>            e.printStackTrace();<a name="line.220"></a>
<span class="sourceLineNo">221</span>        }<a name="line.221"></a>
<span class="sourceLineNo">222</span>        return clone;<a name="line.222"></a>
<span class="sourceLineNo">223</span>    }<a name="line.223"></a>
<span class="sourceLineNo">224</span><a name="line.224"></a>
<span class="sourceLineNo">225</span>    /**<a name="line.225"></a>
<span class="sourceLineNo">226</span>     * Tests if this object is equal to another.<a name="line.226"></a>
<span class="sourceLineNo">227</span>     *<a name="line.227"></a>
<span class="sourceLineNo">228</span>     * @param obj  the object to test against for equality (&lt;code&gt;null&lt;/code&gt;<a name="line.228"></a>
<span class="sourceLineNo">229</span>     *             permitted).<a name="line.229"></a>
<span class="sourceLineNo">230</span>     *<a name="line.230"></a>
<span class="sourceLineNo">231</span>     * @return A boolean.<a name="line.231"></a>
<span class="sourceLineNo">232</span>     */<a name="line.232"></a>
<span class="sourceLineNo">233</span>    public boolean equals(Object obj) {<a name="line.233"></a>
<span class="sourceLineNo">234</span>        if (obj == this) {<a name="line.234"></a>
<span class="sourceLineNo">235</span>            return true;<a name="line.235"></a>
<span class="sourceLineNo">236</span>        }<a name="line.236"></a>
<span class="sourceLineNo">237</span>        if (!(obj instanceof XYDataItem)) {<a name="line.237"></a>
<span class="sourceLineNo">238</span>            return false;<a name="line.238"></a>
<span class="sourceLineNo">239</span>        }<a name="line.239"></a>
<span class="sourceLineNo">240</span>        XYDataItem that = (XYDataItem) obj;<a name="line.240"></a>
<span class="sourceLineNo">241</span>        if (!this.x.equals(that.x)) {<a name="line.241"></a>
<span class="sourceLineNo">242</span>            return false;<a name="line.242"></a>
<span class="sourceLineNo">243</span>        }<a name="line.243"></a>
<span class="sourceLineNo">244</span>        if (!ObjectUtilities.equal(this.y, that.y)) {<a name="line.244"></a>
<span class="sourceLineNo">245</span>            return false;<a name="line.245"></a>
<span class="sourceLineNo">246</span>        }<a name="line.246"></a>
<span class="sourceLineNo">247</span>        return true;<a name="line.247"></a>
<span class="sourceLineNo">248</span>    }<a name="line.248"></a>
<span class="sourceLineNo">249</span><a name="line.249"></a>
<span class="sourceLineNo">250</span>    /**<a name="line.250"></a>
<span class="sourceLineNo">251</span>     * Returns a hash code.<a name="line.251"></a>
<span class="sourceLineNo">252</span>     *<a name="line.252"></a>
<span class="sourceLineNo">253</span>     * @return A hash code.<a name="line.253"></a>
<span class="sourceLineNo">254</span>     */<a name="line.254"></a>
<span class="sourceLineNo">255</span>    public int hashCode() {<a name="line.255"></a>
<span class="sourceLineNo">256</span>        int result;<a name="line.256"></a>
<span class="sourceLineNo">257</span>        result = this.x.hashCode();<a name="line.257"></a>
<span class="sourceLineNo">258</span>        result = 29 * result + (this.y != null ? this.y.hashCode() : 0);<a name="line.258"></a>
<span class="sourceLineNo">259</span>        return result;<a name="line.259"></a>
<span class="sourceLineNo">260</span>    }<a name="line.260"></a>
<span class="sourceLineNo">261</span><a name="line.261"></a>
<span class="sourceLineNo">262</span>    /**<a name="line.262"></a>
<span class="sourceLineNo">263</span>     * Returns a string representing this instance, primarily for debugging<a name="line.263"></a>
<span class="sourceLineNo">264</span>     * use.<a name="line.264"></a>
<span class="sourceLineNo">265</span>     *<a name="line.265"></a>
<span class="sourceLineNo">266</span>     * @return A string.<a name="line.266"></a>
<span class="sourceLineNo">267</span>     */<a name="line.267"></a>
<span class="sourceLineNo">268</span>    public String toString() {<a name="line.268"></a>
<span class="sourceLineNo">269</span>        return "[" + getXValue() + ", " + getYValue() + "]";<a name="line.269"></a>
<span class="sourceLineNo">270</span>    }<a name="line.270"></a>
<span class="sourceLineNo">271</span><a name="line.271"></a>
<span class="sourceLineNo">272</span>}<a name="line.272"></a>




























































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